AMENDMENT TO NAVIGATION NOTICE 19008, 22-16:
LOWER GRANITE NAVIGATION LOCK CLOSURES
NOTICE NUMBER: 19247 / 19008-1 / 22-16a
EFFECTIVE: 03/28/2022 07:00 thru 04/02/2022 17:00 PDT
The Lower Granite navigation lock will be closed daily, 0700-1700 28 March to 2 April 2022 to allow divers to install a temporary floating guide wall restraining rope to replace the severed service cable. As diving operations allow, the lock will reopen during this period to allow river traffic to pass. Installation of the new temporary floating guide wall service line is now completed, and the Lower Granite navigation lock is returned to full service. Restrictions remain in place prohibiting any contact with the floating guide wall by transiting vessels and tows, per Navigation Notice 18986, 22-13.
PROJECT AFFECTED: Lower Granite Lock and Dam – Snake River Mile 107.5
For additional information contact the Lower Granite Operator at (509) 843-2231, call sign WUJ45 Lower Granite, or the NWW Operations Division at (509) 527-7364.
RICHARD C. TURNER
Deputy Chief, Operations Division
Walla Walla District